#!/bin/sh
#
# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
# 2012 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#

key="$__object_id"
[ -f "$__object/parameter/key" ] && key="$(cat "$__object/parameter/key")"
state_should=present
[ -f "$__object/parameter/state" ] && state_should="$(cat "$__object/parameter/state")"

file="$(cat "$__object/parameter/file")"
delimiter="$(cat "$__object/parameter/delimiter")"
value="$(cat "$__object/parameter/value")"

state_is="$(cat "$__object/explorer/state")"

[ "$state_is" = "$state_should" ] && exit 0

case "$state_should" in
    absent)
        # remove lines starting with key
        echo "sed '/^$key\($delimiter\+\)/d' \"$file\" > \"$file.cdist-tmp\""
        echo "mv \"$file.cdist-tmp\" \"$file\""
    ;;
    present)
        case "$state_is" in
            absent)
                # add new key and value
                echo "echo \"${key}${delimiter}${value}\" >> \"$file\""
            ;;
            wrongvalue)
                # change exisiting value
                printf 'sed "s|^%s\(%s\+\).*|%s\\1%s|" "%s" > "%s.cdist-tmp"\n' \
                    "$key" "$delimiter" "$key" "$value" "$file" "$file"
                echo "mv \"$file.cdist-tmp\" \"$file\""
            ;;
            *)
                echo "Unknown explorer state: $state_is" >&2
                exit 1
        esac
    ;;
    *)
       echo "Unknown state: $state_should" >&2
       exit 1
esac 
